Valve for jarring-machines.



R. F. RINGLE.

VALVE FOR JARRING MACHINES.

APPLICATION FILED MAY 21,1912. 1 6 1 g? Patented Apr. 29, 1918.

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Z0 i in esses ROBERTERANKLIN RINGLE, F ZELIENOPLE, PENNSYLVANIA, ASSIG-NOR TO HERMAN PNEUMATIC MACHINE COMPANY, OF ZELIENOPLE. PENNSYLVANIA, A CORPORA- TION OF PENNSYLVANIA.

VALVE FOR JARRING-MAGHINESL Specification of Letters Patent.

Application filed May 21,

Patented Apr. 29, 1M3.

1912. Serial No. 698,802.

provement in Valves for J arring-Machines and I do hereby declare the followin to be a full, clear, and exact description t ereof.

My invention relates to molding machines, andha's special reference to what are known as jarring machines for forming sand molds.

The ob ect of my invention is to provide a cheap, simple and efiicient form of controlling device to govern the movements of.

such machines in their jarring operation, and one which will be automatiein-eperation and constructed of few and durable parts so that there will be practically no danger of said device getting out of order.

My invention consists, generally stated,

-in the novel arrangement, construction and combination of parts, as hereinafter more specifically set forth and described and particularly pointed out in the claims.

To enable others skilled in the art to which my invention appertainsto construct and use my improved molding machine, I will describe the same more fully, referring to the accompanying drawing, in which Figure 1 1s a central section ofmy improved molding machine showing the valve and plunger in one position. Fig. 2 is a central section of the valve and part of the plunger in its other position.

Likesymbols of reference herein indicate like parts in each of the figures of the drawin g V i As illustrated in the drawing, 1 represents the base of the machine, which has thecasing 2 of rectangular shape extending up from the same, and within said casin and formed aspart of the same is the cylinder 3. This cylinder 3 is positioned vertically within the casing 2 and has a series of vertical wings 4 connecting the outer sides of the same with the inner sides of said casing, whileacross wall 5 is formed in the lower end of said cylinder, and above the same is an opening '6 through which an operating fluid, such as air, is admitted from the differential co-ntrolvalve A foroperating the same, while an operating port 6 is located in said cylinder directlyabove the opening 6,'and safety ports 6 are located l above said operating port and at intervals around the same. WVithin the cylinder 3 above the cross wall 5 therein is the plunger 7', which is provided with an exhaust opening 7 near the lower end of the same for communicating at intervals with the opening 6 in cylinder 3, while said plunger is also provided with an opening 7 above said cylinder and diametrically opposite to said exhaust opening, and said plunger is tern plate 9, and such plate extends over the top of the casing 2' and is of rectangular shape in an inverted cup-shaped form, so that its outer annular flange 10 extending down from the outer edge of the same will fit around the upper edge of such casing when the plate is inits lowered position. Extending down from the under face 11, which is connected to the plunger 7 by a series of wings or ribs 12 at each corner of the same and intermediate of said corners is a post or enlargement 13 extending around said'flange from the bottom of the plate 9 to apoint below said flange.

Below each of the enlargements 18 is a jarring post or bracket 14 which is formed as part of and extends inward from the inner face of the casing 2, and each of said posts is provided with an angular rib 1.5 connecting the bottom of the same with the inner side of the casing. Within the upper face of the posts-14 is a seat 16 for the reception of a resilient jarring-block 1'7, preferably formed of rubber, or other suitable flexible material, and fitting within said seat and against each of the upper faces of said block is a jarring block plate. 18, which extends above its seat and is adapted to engage with the post 13 in line with the same in the jarring operation.

Situated at a point substantially near the bottom of plunger 7 and connected to the outer face of the cylinder 3 within the casing 2 is the differential control valve at which has its body 19 secured to said cylinder by bolts 20 passing throhghfianges 21 toisupport the'sar'ne'. The valve body 19 is '22which fits over the same and is'secured thereto by means of the bolts 23, while the I lower end of said body is provided with a means of bolts fitting into the same.

connected at its upper end to a table or pat provided at its upper end with an upper wall bottom cover 24, which is secured thereto by Connecting to the lower end of the bottom cover 24 and fitting therein by means of the screw thread 26 is the supply pipe 26 which communicates with the inlet seat 27 in said bottom cover, and said inlet seat has the four passageways 28 therein which communicate with the passageway 29 in the valve body 19, which passageway in turn communicates with the opening 6 in the cylinder 3.

Immediately above the passageway 29 in the valve casmg or body 19 and communi eating therewith is an exhaust opening 30 which leads into the exhaust chamber 31 immediately above the same, which is provided with an exhaust pipe 31 leading therefrom, while a piston cylinder 32 is located at the upper end of said valve body and is inclosed at its upper end with the upper wall 22, which has a recessed center 33 therein.

Upon the upper wall 22 is located a differential cylinder 34 which is longitudinal and has a differential plunger 34 within the same, said plunger having its greater diameter 34 nearest to the cylinder 3, and having a recessed portion 35 between said diameter and its lesser diameter 34". The plunger 34 is also provided with a leakage port 35 which is adapted to take care of all air which leaks from the main plunger 7, as hereinafter explained. At the center of the differential cylinder is an air inlet pipe 36 and the compressed air from this pipe is adapted to be received in the recess 35 and between the greater and lesser diameters 34 and 34 re spectively. This plunger 34 is adapted to travel longitudinally within the cylinder' 34' and has a sto 37 at each end of said cylinder. The differential cylinder 34 is provided at the outer end of the same with an exhaust port 38 and such port communicates with the atmosphere for the purpose of exhausting the air from said cylinder.

The upper wall 22 is provided with a pair of ports 39 and 40 respectively, which ports are adapted to extend between the recess 33 above the piston cylinder 32 and the differ ential cylinder 34.

Communicating withthe difl'erential cylinder 34 and extending therefrom to the opening 6' is a passageway 41, which is adapted to communicate the compressed air below the plunger 7 to the rear of greater diameter 34 of the differential plunger 34, as hereinafter explained.

Within the piston cylinder 32 is a valve device having a piston 42 which operates within the same and has a stem 42' extending downward from the same through the exhaust chamber 31 and opening 30. This stem 42 is provided at its lower end with a head or flanged portion 43, and terminates in a shank 44, which en ages by a valve face 44 at its lower end with the inlet seat 27 in the bOLtOIIl cover. The head 43 has a valve face 43 at the upper end of the same for engaging wit-h a valve seat 30 above the passageway 29, and the piston 42 in the piston cylinder 32 is provided with the ordinary rings 45 around the same to prevent leakage'of the operating fluid by reason of the. wear occasioned by the movement of sailf-v piston in said cylinder.

' The use and operation of my improved apparatus is as follows :Considering the plston in itsv lowered position such as is shown in Fig. 2, the operating fluid enters throughthe supply pipe 26 and raises the piston to a position such as shown in Fig. 1, whereupon said fluid passes through the inlet seat 27 and through the passageways 28 and 29 and enters the cylinder 3 through the opening 6 beneath the plunger 7, thereby raising said piston until the bottom of the same opens the valve operating port 6, whereupon the operating fluid enters the assa-geway 41 and thence into the differential cylinder 34 and presses against the rear of the greater diameter 34 of the plunger 34, and such plunger is moved over in said cylinder and the recessed portion- 35 communicates with the port 39 so that the compressed air from the inlet pipe 36 enters said port and bears against the upper face of the piston forcing the same downward and shutting off the operating fluid supply, whereupon the plunger 7 in the cylinder 3 will drop down in said cylinder and the posts 13 on the table 9 will strike upon the jarring post 14, while the fluid in said cylinder and below said plunger willbe expelled therefrom through the opening 6 in the cylinder 3, the passageway 29, the exhaust opening 30, the exhaust chamber 31 and into the exhaust pipe 31. When the plunger 7 has reached its lowerered position in the cylinder 3 the exhaust opening 7 in said plunger will communicate with the valve operating port 6 in the cylinder 3, thus allowing the fluidin the cylinder 32 to exhaust through the port 40 in the upper wall 22 and through the cylinder 34 and the exhaust port 38' into the atmosphere. The machine is now ready for another operation and is accomplished in the manner described, so that the jarring is repeated untilthe sand in the mold is packed to the required degree of solidity, The differential plunger 34 is now caused to move back to its original position as shown in Fig. 1 by the action of the com- Pr s ed. ai from h vir 6 n t e nn r face of the greater diameter 34*- of said differential plunger and this is accomplished by the reason that the compressed air has, a greater diameter to act against Ont-hat articular side of said plunger, When'the above operation has been accomplished and the plunger 7 in the cylinder 3, has been dropped to jar the same fluid whichvhas' r wearer been exerted against the piston 42 will exhaust through the passageway 41 and through the ports 6 and 7 into the interior of the plunger 7 where it may be exhausted from the exhaust port 7 into the atmosphere.

Referring plunger 34 as shown in'Fig. 1, it any air leaks up past the plunger rings on the plunger 7 it would enter the -port 6 and pass up the passageway 41, and enter the leakage port 35 in the diiferential plunger 34 and would pass down the port 39 into the cylinder 32, thence upward through the port 40, the cylinder 34 and discharge into the atmosphere through the exhaust port- 38 without operatingthe plunger 34 in the cylinder 34L. If the plunger 7 has arisen to the position shown in'Fig. 2 and on account of the rapid drop of the same in the cylinder 3 the air below the same is'not all exhausted through the port 6 and the plun-- ger 34: will travel to the'position shown in Fig. 2, then the air from the pipe 36 will travel down the port 39 and up the port 40 and into the leakage port 35. It will thus'be seen that all the leakagein the controlling valve and plunger is taken, care of,

; thus insuring a perfectly smooth operation and the operation of the valve only when the proper ports communicate. I

In the use of my improved valve'there is a great advantage over the ordinary form-of control of jarring machines, in that, when a superfluous amount of the operating fluid is admitted to the cylinder and under the plunger therein, there is no way of detecting this waste of energy, as the fluid is all discharged almost said cylinder to allow the plunger .to drop, while with the use of my improved valve the exhaust-passageway is so regulated that the fluid in discharging must all pass therethrough, sothat it too much pressure was being applied to lifting the plunger in said cylinder the fluid would not have time to escape through the valve before the plunger had dropped the distance required'to allow of the mold, but the fluid in a the jarrin the cylin or which had not had time to escape would form a cushion in said 'cylin-.-

der against which said plunger would drop so that there would be no jarring by the plate striking the jarring blocks, and the operator will'thus be warned to diminish the supply of fluid to the cylinder.

It will also be readily seen that my proved valve is automatic and self contained and does not dependtor its operations upon any hooks, lever's, tripping devices, springs or any external mechanism, and that since said valve is entirely inclosed no dirt or sand can come in contact with any of the working parts of the same and thus cause to the piston of the di-fierential instantaneously from injury. The, travel of the valve stem and differential plunger is so small that there will be very. little jarring of the same, so that the wear thus occasioned will be reduced to a minimum, and by the arrangement of the parts in my improved valve, the plunger will be given a perfect upward and downward stroke and will start upward after the table has struck upon the jarring blocks, thus insuring an even and regular movement.

What I claim as my inventionand desire to secure by Letters-Patent is 1 In a combination with a jarring ma chine havinga cylinder provided with a port therein and a plunger within saidcylinder, a valve casing connecting with said port and a double faced distributing valve in said casing for allowing the admission of operating fluid to said cylinder through said port for raising said plunger, a piston above and connected to said valve, and a small plunger .above said piston and controlling {a supply of compressed air adapted to communicate said air to said piston for opeihting the same when said plunger has reached its raised position, thereby cutting ofi the admission of fluid to said cylinder to allow thefluid in the cylinder to exhaust through said port and permit said plunger to drop in said cylinder.

2. In combinationwith a jarrin machine having a cylinder provided wit a port therein and a plunger within said cylinder, a valve casing connecting with said port and a double faced distributing valve in said casing for allowing the admission of operating fluid to said cylinder through said port for raising said plunger, a piston above and connected to said valve, and a small plunger above-said piston'and controlling a suppl' of compressed airwadapted to communica c said air to the upper side of'said piston :tor

operatin the same when said plunger has reached its raised osition, thereby cutting 03 the admission oi fluid to said cylinder to allow the fluid 'in the cylinder to exhaust through said port and permit said plunger to drop in said cylinder.

3. In combination with a jarring machine are having a cylinder provided with a porttherein and a plunger within said cylinder, a valve casing connecting with said port and a double faced distributing valve in said casing for allowing the admission of operating fluid to said cylinder through said port for raising said plunger, a piston above and connected to said valve, and a small plunger having ends of diflerent diameters above said piston and controlling a supply of compressed air adapted to communicate said air to said piston for operating the same when said longer has reached its raised position,

there y cutting 0d the admission of fluid to said cylinder to allow the fluid in the cylinvhaving a cylinder provided with a der to exhaust through said port and permit said plunger to drop in said cylinder.

4. In combination with a jarring machine having a cylinder provided with a port therein and a plunger within said cylinder, a valve casing connecting with said port and a double faced distributing valve in said casing for allowing the admission of 'oper ating fluid to said cylinder through said port for raising said plunger, a piston above and connected to said valve, and a small plunger having ends of different diameters above said piston and controlling a supply of compressed air adapted to communicate said air to the upper side of said piston for operating the same when said plunger has reached its raised osition, thereby cutting off the admission 0 fluid to said cylinder to allow the fluid in the cylinder'to exhaust through said port and permit said plunge-1 todrop in said cylinder.

5. In combination with a arring machine ort therein and a plunger within said cylin der, a valve casing connecting with said port and a double faced distributing valve in said casing for allowing the admission o'foperating fluid to said cylinder through said port for raising said plunger, a piston above and con 'nected to said valve, and a small plunger having ends of different diameters and a recessed chamber between the same above said piston and controlling a supply of compressed air adapted to communicate said air to said piston for operating the same when said plunger has reached its raised position, thereby cutting off the admission of fluid to said cylinder to allow the fluid in the cylinder to exhaust through said port and permit said plunger to drop in said cylinder.

6. In combination with a jarring-machine having a cylinder provided with a porttherein and a plunger within said cylinder, a valve casing connecting with said port and a double faced distributing valve in said casing'for allowing the admission of operating fluid to said cylinder through said port for raising said plunger, a piston above and connected to said valve, and a small plunger having ends of different diameters and having a recessed chamber bet-ween the same above said piston and controlling a supply of compressed air adapted to communicate said air to the upper side of said piston for operating the same when said plunger has reached its raised position, thereby cutting off the admission of fluid to said cylinder to allow the fluid in the cylinder to exhaust through said' port and permit said plunger to'drop in said cylinder.

7. In combination with a jarring machinehaving a cylinder provided with a port therein and a plunger within said cylinder, a valve casing connecting with said port and a double faced distributing valve in said casing for allowing the admission of operating fluid to said cylinder through said port for raising said plunger, a piston above and connected to said valve, a small plunger above said piston and controlling a supply of compressed air adapted to communicate said air to said' piston for operating the same when said plunger has reached its raised position, thereby cutting off the admission of fluid to said cylinder to allow the fluid in the cylinder to exhaust through said port and permit said plunger to drop in said cylinder, and means for preventing the operation of said small plunger by the leakage of air from said cylinder.

8. In combination with a jarring machine having a cylinder provided with a port therein and a plunger .within said cylinder, a valve casing connecting with said port and a double faced distributing valve in said casing for allowing the admission of operating .fluid to said cylinder through said port for raising said plunger, a piston above and connected to said valve, a small plunger, above said piston and controlling a supply of compressed air adapted to communicatesaid air to the upper side of said piston for operating the same when said plunger has reached its raised position, thereby cutting ofl the admission of flu'id to said cylinder. to allow the fluid in the cylinder to exhaust through said port and permit said plunger to drop in said cylinder, and means for preventing the operation of said small plunger 'by the leakage of air from said cylinder.

9. In combination witha jarring machine having a cylinder provided with a port therein and a plunger within said cylinder, a valve casing connecting with said ort and a double faced distributing valve in said casing for, allowing the admission of operating fluid to said cylinder through said port for raising said lunger, a piston above and connected to sai valve, a small plunger having ends of difi'erent diameters above said piston and controlling a supply of compressed air adapted to communicate said air to said piston for operatin I the same when said plunger has reache its raised position, thereby cutting off the admission of fluid to said cylinder to allow the fluid in the cylinder to exhaust through said port and ermit said plunger to drop in said cylin er, and means for preventing the operation of said small plunger by the leakage of air from said cylinder.

10. In combination with a jarring Ina-- chine having a cylinder provided with a port, therein and a plunger within said cylinder, a valve casing connecting with said port and a double faced distributing valve in said casing for allowing the admission of operating fluid to said cylinder through said port for raising said plunger, a piston of compressed air ada ted to communicate above and connected to said valve, a smallplunger having ends of difierent diameters above said piston and controlling a supply said air to the upper side of said piston for operating the same when said plunger has reached its raised position, thereby cutting OK the admission ct fluid to said cylinder to allow the fluid in the cylinder to exhaust throughsaid port and (permit said plunger to drop in said cylin er, and means for preventing the operation ofsaid sm'all plunger by the leakage of air from said cylinder.

11. In combination with a jarring machine having a cylinder provided with a ort therein and a plunger within said cylmder, a valve casing connecting with said port and a double faced distributing valve in said casing for allowing the admission of operating fluid to said cylinder through said port for raising said plunger, a piston aobve and connected to said valve, a small plunger havin ends of difierent diameters and a recesse chamber between the same above said piston and controlling a supply of compressed air adapted to communicate said air to said piston for operating the same when said plunger has reached its raised position, thereby cutting ofl the admission of fluid to said cylinder to allow the fluid in the cylinder to exhaust through said port and permit said plunger to drop in said cylinder, .and means for preventing the operation of said small plungengby the leakage of air fromsaid cylindenf 12. In combination with a jarringmachine having a cylinder provided with a {port therein and a plunger within said cylinder, a valve casing connecting with said t port and a double faced distributing "valve in" said casing for allowing the admission of ope'rating fluid to said cylinder through said port for-raising said plunger, a piston above and connected to said valve, a small plunger having. ends of difi'erentdiameters and having a recessed chamber between the same above said piston and controlling a supply of compressed air adapted to communicate said air to the upper side of said piston for operating the same when said plunger has reached its raised position, thereby cutting ofi the admission of fluid to said cylinder to allow the fluid in the cylinder to exhaust through said port and ermit said plunger to drop in said cyliner, and means for preventing the operation of said small plunger by the leakage of air from said. cylinder.

In testimony whereof, I the said ROBERT FRANKLIN RINGLE have hereunto set my hand.

ROBERT FRANKLIN RINGLE. Witnesses WALTER W. Huomas, G. S..MOMam. 

